Optimizing network load balancing: an hybridization approach of metaheuristics with column generation
Dorabella Santos , Amaro de Sousa , Filipe Alvelos , Michał Pióro
AbstractGiven a capacitated telecommunications network with single path routing and an estimated traffic demand matrix, we aim to determine the routing path of each traffic commodity such that the whole set of paths provide an optimal network load balancing. In a recent paper, we have proposed a column generation based heuristic where, in the first step, we use column generation to solve a linear programming relaxation of the original problem (obtaining, in this way, a lower bound and a set of paths for each commodity) and, in the second step, we apply a multi-start local search with path relinking heuristic on the solution space defined by the paths of the first step. Here, we propose a hybridization approach of the metaheuristic with column generation that can be seen as an enhanced version of the previous approach: we run column generation not only at the beginning (to define the initial search space) but also during the search. These additional column generation steps consist in solving a perturbed problem defined by the incumbent solution. In the previous paper, we have shown that the first approach is efficient in obtaining near optimal routing solutions within short running times. With the enhanced version, we show through computational results that the additional paths, introduced by the additional column generation steps, either improve the efficiency of the algorithm or show similar efficiency in the cases where the original algorithm is already very efficient.
|Journal series||Telecommunication Systems, ISSN 1018-4864, [1572-9451 (electronic version)]|
|Keywords in English||Link load balancing optimization · Column generation based heuristics · Routing · Traffic engineering, Artificial Intelligence (incl. Robotics), Business Information Systems, Column generation based heuristics, Computer Communication Networks, Link load balancing optimization, Probability Theory and Stochastic Processes, Routing, Traffic engineering|
|Project||The Develpment of Digital Communicatios. Project leader: Lubacz Józef,
, Phone: 22 234 65 31, start date 04-05-2012, planned end date 31-03-2013, end date 31-12-2013, IT/2012/statut, Completed
Optimization models and methods for planning of integrated transport network under uncertain, and short-term and long-term variable traffic demand. Project leader: Pióro Michał, , Phone: +48 22 234-7383, start date 08-10-2010, planned end date 08-10-2011, end date 31-03-2012, IT/2008/SPUB/07, Completed
European Network of the Future: Anticipating the Network of the Future - From Theory to Design. Project leader: Pióro Michał, , Phone: +48 22 234-7383, start date 01-01-2008, end date 30-06-2012, IT/2008/7PR/05, Completed
|Score|| = 20.0, 17-03-2020, ArticleFromJournal|
= 25.0, 17-03-2020, ArticleFromJournal
|Publication indicators||= 5; = 7; = 8.0; : 2014 = 1.174; : 2013 = 1.163 (2) - 2013=1.201 (5)|
|Citation count*||8 (2020-09-15)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.